syzbot


general protection fault in send_hsr_supervision_frame

Status: auto-closed as invalid on 2020/07/13 17:14
Reported-by: syzbot+0df38e0acc76f2f5e24d@syzkaller.appspotmail.com
First crash: 835d, last: 835d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in send_hsr_supervision_frame (2) 1 570d 570d 0/1 auto-closed as invalid on 2021/04/04 18:15
upstream general protection fault in send_hsr_supervision_frame C done 1395 1079d 1087d 13/22 fixed on 2019/08/05 13:45

Sample crash report:
audit: type=1804 audit(1584292405.947:158): pid=19996 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir029205568/syzkaller.S0w3K6/484/bus" dev="sda1" ino=16762 res=1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7390 Comm: syz-fuzzer Not tainted 4.14.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809958e180 task.stack: ffff888084128000
RIP: 0010:send_hsr_supervision_frame+0x32/0xf40 net/hsr/hsr_device.c:263
RSP: 0000:ffff8880aea07cd0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff0f417ac
RDX: 0000000000000002 RSI: 0000000000000017 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000022012
R10: ffff88809958ea28 R11: ffff88809958e180 R12: 0000000000000000
R13: ffff888052872f20 R14: 0000000000000010 R15: 0000000000000000
FS:  000000c4201d1890(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32429000 CR3: 000000009b7b8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hsr_announce+0xf0/0x330 net/hsr/hsr_device.c:350
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0033:0x41cc54
RSP: 002b:000000c420335f38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 000000c420084900 RBX: 0000000000000015 RCX: 000000c42002b270
RDX: 0000000000000000 RSI: 00000000009bf988 RDI: 0000000000004688
RBP: 000000c420335f80 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000020 R11: 000000c42ad70360 R12: 000000c449784750
R13: 0000000000000001 R14: 000000c43f2fbf20 R15: 0000000000000001
Code: 54 49 89 fc 55 4d 8d 74 24 10 53 89 d3 48 83 ec 48 89 74 24 14 e8 6f 4e 22 fb 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 db 0c 00 00 48 b8 00 00 00 00 00 fc ff df 49 
RIP: send_hsr_supervision_frame+0x32/0xf40 net/hsr/hsr_device.c:263 RSP: ffff8880aea07cd0
---[ end trace af17bd91f4843892 ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/03/15 17:13 linux-4.14.y 12cd844a39ed 749688d2 .config log report